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Algebra

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range

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Algebra Math

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Date created

Mar 1, 2020

Cards (7)

Section 1

(7 cards)

range

Front

The range of a function is the complete set of all possible resulting values of the dependent variable (y, usually), after we have substituted the domain. In plain English, the definition means: The range is the resulting y-values we get after substituting all the possible x-values.

Back

Domain

Front

The domain is the set of all possible x-values which will make the function "work", and will output real y-values. When finding the domain, remember: The denominator (bottom) of a fraction cannot be zero The number under a square root sign must be positive in this section

Back

Quadratic Formula

Front

x = -b ± √(b² - 4ac)/2a

Back

Quadratic Formula Method

Front

plug in a, b, and c into the quadratic formula and solve

Back

discriminant formula

Front

if D> 0: 2 real solutions Chú ý: Trong 2 real solutions phải tìm ra là số Irrational hay rational bằng cách khai căn ra. Nếu không thể khai căn, số này là irrational --> 2 nghiệm irrational. Nếu có thể khai căn --> 2 nghiệm rational. if D<0: 2 non-real solutions if D=0 : exactly 1 solution

Back

discriminant question: to determine the type and number of solutions

Front

if D> 0: 2 real solutions if D<0: 2 non-real solutions if D=0 : exactly 1 solution

Back

Addend

Front

Any number being added

Back